Allocate Car CO2 all to owner or between drivers ?

Hi guys. Surely the only fair way of doing this is by mileage? Also including an allowance for the non-fuel element of emissions, e.g. manufacturing. So for a car which officially produces 130g/km, this figure will have to be scaled up to take into account the CO2 from producing and maintaining the car, although it would have to be a rough estimate. I’m not an expert on this but a web search should help.

Hi James, So if more than one person drove a car, you propose each persons carbon account would be debited according to the actual mileage each had driven ?

Is this what York CRAG actually does ?

If yes, what has the experience of doing it this way been ?

And, if yes, does your CRAG check that all the mileage has been reported and how is this done ?

Firstly I should say that I left York over 2 years ago and have not been involved in a CRAG since.

York CRAG took a fairly informal approach, where people would be trusted to record their carbon ‘consumption’ and there were no checks. I think I used my fuel purchases as the basis (obviously this doesn’t count the embedded carbon in the car etc) but I can see its more complicated for shared vehicles. Personally I would used a mileage-based approach for shared vehicles, it seems the best way of doing it to me (unless you use a trip computer which tells you how much fuel you’ve used on a journey).

My view is that it is important to apportion emissions properly to individuals’ activities where possible. In some cases this gets more complex (for example for public transport, I don’t believe you should simply divide the emissions during your journey by the average no of passengers) but this is another whole area of discussion!

James

John, To clarify : was it left to each individual who had shared use of a car to decide whether to divide the cars mileage by the number of regular drivers or was it a policy decided by Islington CRAG ?